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Byron, you may have an issue with your measurement device. You aren't by chance using calipers to make your center pin measurements, are you? If so try investing in a decent quality micrometer, something accurate to .0001" and then learn how to properly use it and read it.

Byron, you may have an issue with your measurement device. You aren't by chance using calipers to make your center pin measurements, are you? If so try investing in a decent quality micrometer, something accurate to .0001" and then learn how to properly use it and read it.

No, I have two micrometers, one digital and one regular. They both gave the same readings. Another technician verified also. I sent the first ones back to one place and they confirmed that they were wrong. I haven't sent the others back.

I know to subtract 10 from the reading and divide by two.In one of the bags, the pins that were supposed to be 1 1/2 sizes up were actually smaller. This happened to me three years ago and again this week! Go figure.

I measured the centers on my Ibach last night, with two micrometers. The imperial one (accuracy 0.001") read 51.3 thou and the metric one (accuracy 0.01 mm) read 1.303 mm (in both cases, I estimated the last digit), so they corresponded very well, presumably to a 1.3 mm center.

From which number should I subtract 10, divide by 2, and what does the resulting number mean? Pin size for the supplier?

Of course everything is miked, as you state. That say the consistency is generally high with the cut centers, I cant have "strong" or less strong, for instance. but miking remains as part of process. A mike stand can be useful too. to mike tuning pins it goes way faster.

Last edited by Kamin; 08/05/1005:59 PM.

Professional of the profession. Foo Foo specialistI wish to add some kind and sensitive phrase but nothing comes to mind.!

The WNG pins for their composite parts (needle bearings) come in two lengths and 5 or 6 diameters. One length for hammer and whip centers, the other for rep and jack centers (Shorter). Sizes start at .0500" and work up in increments of .0002". Not meant to be used for cloth center bushings and not soft enough to cut anyhow.

They also sell german silver (solid,no plating) regular pins (longer and pointed, can be cut to length) for other types of centers. See their web site for further info.